Air conditioning and circulating apparatus for cold storage chambers



c. A. MOORE 1,813,188

AIR CONDITIONING AND CIRCULATING APPARATUS FOR COLD STORAGE CHAMBERS July 7, 1931.

I 3 Sheets-Sheet 1 Filed June 5, 1929 gmntoz Charles A. Mom Q C. A. MOORE July 7, 1931.

AIR CONDITIONING AND CIRCULATING APPARATUS FOR COLD STORAGE CHAMBERS 36heets-Sheet 2 Filed June 5, 1929 m AOU- mu ION U- E w s .m a H m .fi 6 a 4. m w m m\ .H U a J DN m n L 1 .m HT 3 w n H Nu ..V\ G Oh .mfl II URN fin ON 7 n gmzntot July 7, 1-931.

C. A. MOORE AIR CONDITIONING AND CIRCULATING APPARATUS FOR GOLD STORAGE CHAMBERS Filed June 3, 1 29 3 Sheets-Sheet 3,

gnwntoz Charles A Moofc Patented July 7, 1931 UNITED STATES PATENT OFFICE c naRLEs A. MOORE, or EDINA, mmnnso'm AIR CONDITIONING AND CIRCULATING APPARATUS FOR GOLD S TORAGE CHAMBERS Application filedJune a, 1929.. Serial No. 368,150.

tion, by gravity, and to arrange the coils in the bank so as to provide opposed channellike passageways extending longitudinally thereof, one opening upwardly and the other downwardly, and, further, to provide means for drawing the air from the upper channellike passageway and forcingit into and along the lowervchannel-like passageway and for taking air from another source, conditioning it, and mixing the same with said air which is forced into said lower passageway.

Another object is to provide, in a chamber, an overhead bank of refrigerating coils extending longitudinally of the chamber, centrally thereof and to provide in connection therewith an air conditioning appliance located at one end of the bank of coils for introducing air into the chamber longitudinally of said bank of coils.

With the foregoing and other objects in View, which will appear in the following description, the invention resides in the novel combination and arrangement of parts and in the details of construction hereinafter described and claimed.

In the drawings, Fig. 1 is a plan view of apparatus embodying my invention, the

. same being shown as installed in a chamber provided in a building structure illustrated in section; Fig. 2 is a vertical, longitudinal sectional view taken as on the line 2--2 of Fig. 1, and Fig. 3 is a vertical transverse sectional view taken'as on the line 33 of Fig. 1.

. In the drawings, I have illustrated abuilding structure, 10 designating the floor, 11 the side walls, 12 the end walls and 13 the ceiling of a storage chamber A. An embodiment of my invention, shown as installed within this chamber, includes a bank of refrigerating coils B and an upright refrigerating appliance C. Tlig bank of coils B- is arranged overhead and extends above a central aisle chamber, centrally, longitudinally of hamber, said bank clearing the ceiling T 13 w i i' fliciently to provide a space for the passageof air between the same and the ceiling. The appliance C stands in the central aisle atj'ene end of the bank of coils B and near one of'the end walls 11.

;Theb

16 waffle," all bent in U-shaped formation, p1pes15 being outside of pipes 14 and pipes 16 being outermost. The corresponding endsof pipes 14, 15 and 16 have valved connectlons with a feed header 17 for a refrigerating medium, said header being connected with a feed main 18. The other ends of pipes 14, 15 and 16 have valved connections with a return header 19, which in turn connects with a return main 20. Between the parallel reaches or legs of an intermediate pipe 14 is a partition forming pipe 21 turned back and forth around hairpin bends, one end of the same having a valved connection with the feed header 17 and the other end having a similar connection with ,the return header 19. All of the pipes 14, 15, 16 and 21 are supported by hangers 22 secured to the ceiling 13. Said pipe 21 is a partition forming pipe by reason of the fact that the reaches thereof are in such near proximity to each other as to be readily frosted together to form a wall which divides what would otherwise be an elongated central port, betweemthe parallel reaches of the pipes 14, into channellike passageways B and B, the former or upper passageway opening upward into the space between the bank of coils and the ceiling 13 and the latter or lower passageway opening downward into the central aisle of the chamber.

The appliance G is located at the header end of the bank of coils B, where the channellike passageways B and B are open at their ends. Said appliance includes an outer shell consistin of a spirally coiled pipe 23 forming a body portion, a cap 24, and a skirt 25 supplied with gates 26 and, further, includes inner and outer concentric conduits 27 and 28 arranged axially of the shell. The lower m v of coils B, preferably though not" ecess'arily, consists of tiers of pipes 14,

end of the spirally coiled pipe 23 has a valved connection 29 with the feed main 18 and the upper end thereof has a valved connection 30 with the return main 20. The turns of this pipe 23 are close enough with respect to each other as to be frosted together. Thus, the

- space between the conduit 27 and the inner walls of the shell provides a refrigerating conduit for air admitted to the shell from the interior of the chamber via conduit branch 31 and from the outer atmosphere via conduit branch 32, said branches 31 and 32 being respectively fitted with dampers 33 and 34. Conduit 27 communicates at the lower end thereof with the lower portion of the conduit formed by the outer shell of the appliance C, the upper end of said conduit 27 being supplied with an upper branch 27a and a lower branch 27?), said branches being fitted with dampers 35 and 36 respectively.

' Both of these branches terminate in horizonand from the conduit proper 27 and expel it.

tally extended portions, the extremity of branch 27a extending into the upper channellike passageway B and the extremity of branch 27?) extending into the lower channel-like passageway B Said extremity of said latter branch 27 b is enlarged to provide a casing 37 for a fan 38, which is suitably driven, as by a. motor 39, in a direction to draw air into branch 27?) from branch 27 a into the lower channel-like passageway B along the length thereof. Conduit 28 opens at its upper end near the ceiling 13 and is supplied near that end with a damper 40. This conduit 28, at the lower portion thereof, includes two branches 28a and 28?), the former extending through the skirt 25 into the interior of the chamber and being supplied with a removable cap 41, and the latter'extending through the skirt 25 and the adjacent end wall 11 into the outer air and with a damper 42.

In use, the refrigerating medium employed is allowed to pass through the-spirally coiled being supplied pipe 23 of the appliance C and through the pipes 14, 15, 16 and 21 of the bank of coils B, whereupon the adjacent turns of the pipe 23 in the appliance and the pipe 21 in the bank of coils B become frosted together. Air in the vicinity of the bank of coils and about the appliance is refrigerated and descends in the central aisle to the lower portion of the chamber. Here, the refrigerated air divides and flows toward the relatively warm walls. Thence, it rises along the walls to the upper portion of the chamber, and thence flows inward from either side to take the place of the air descending from the bank of coils B and about the appliance C. With the gates 26 and damper 33 open, the appliance operates internally to additionally refrigerate the through conduit 28 to the outside from theupper portion of the chamber A. To secure the maximum refrigerating effect and to stimulate the circulation, effected by gravity as aforesaid, gates 26 are closed, dampers 35, 36 opened and fan 38 started. Air is then drawn by the fan 38 into branch 27 b from the appliance proper and from the branch 27a, the former having its source of air supply from the upper portion of the chamber through branch 31 or from the outer atmosphere through branch 32, or both, while the latter has its source of air supply from the upper channel-like passageway B, which is fed from either side of the bank of coils B by air moving from the walls along the ceiling and toward said bank of coils. Thus, air partially refrigerated in the upper channel-like passageway B in the coil bank is drawn into branch 27 b and mixed with refrigerated air also drawn thereinto from the appliance proper, the mixture being expelled into the lower channel-like passageway B where under built up pressure, its descent by gravity is stimulated.

Changes in the specific form of my invention, as herein disclosed, may be made within the scope of whatis claimed without departing from the spirit of my invention.

Having described my invention, what I claim as new and desire to protect by Letters Patent is:

1. In combination, a structure providing a chamber, an overhead bank-of refrigerating coils disposed longitudinally of the :chamber, centrally thereof, near the ceiling, the coils being relatively arranged to provide upper and. lower channel-like passageways extending longitudinally of the bank, the former opening upward and the latter opening downward, an appliance at one end of the bank of coils including two upright conduits and means for reducing the temperature of the air therein, one conduit communicating at its upper end with the outer atmosphere and the second conduit communicating at its lower end with the lower portion of said first conduit, the upper portion of the second conduit terminating in two branches, one communicating with the upper channel-like passageway in the bank of coils and the other communicating with the lower channel-like passageway therein, and a fan arranged to draw air into said second branch both from said first branch and from said second conduit and mix it and blow it into said lower passageway.

2. In combination, a structure providing a chamber, an -overhead bank of refrigerating coils disposed longitudinally of the chamber, centrally thereof, near the ceiling, the coils being relatively arranged to provide upper and lower channel-like assageways extend- .ing longitudinally of t e bank, the former opening upward and the latter opening downward, a refrigerating appliance including a passageway.

3. In combination, a structure providing a chamber, "means within sald chamber for refrigerating the air therein consisting of an overhead bank of refrigerating coils relatively arranged to provide upper and lowe channel-like passageways extending longitudinall'y of the bank, the former opening upward, and the latter opening downward, additional air refrigerating means-and means for drawing air therefrom and from saidupper passageway and mixing and blowing the same into the lower passageway. A

4.- In. combination, a structure providing a chamber, means within said chamber for refrigerating the air therein consisting of a bank of overhead coils clear of the ceiling arranged centrally, longitudinally of the chamber, the bank having vertical passageways for air between the coils thereof extending len hwise of the bank and communicating with the upper portion of the chamber thereabove and with the lower portion of the chamber therebeneath, additional air refrigerating means including an air conduit, means'for refrigerating the air therein, and a fan arranged to draw air from said conduit and blow it into said bank of coils lengthwise thereof, said conduit being open to the interior of the chamber centrally thereof at the ceiling to provide for the ingress of air thereto from the chamber at that point. 5. In combination, a structure providing a chamber, means within said chamber for refrigerating the air therein consisting of a bank of overhead coils clearof the ceiling arranged in a central aisle longitudinally of the chamber, the bank having vertical pas- H sageways for airbetween the coils thereof extending lengthwise of the bank and communicating-with the upper portion ofthe chamber thereabove and with the lower portion of the chamber therebeneath, additional air refrigerating means located in the central aisle at one end of thebank of coils and including an air conduit, meansvfor refrigerating the air therein, 'anda fan arranged to draw air from said conduit and blow it into the bank of coils longitudinally thereof.-

6. In combination, a structure providing a chamber, means within said-chamber for refrigerating the air therein consisting of a bank of overhead coils clear of the ceiling and extending centrally, longitudinally of the chamber, said refrigerating means being adapted to set up a gravitating circulation of air within the chamber consistingin the flow of air downwardly from the, ceiling through the bank of coils, thence toward the side walls, thence toward the ceiling and thence back along the ceiling to point of beginning above said bank of coils, other means or refrigerating air and blowing it into the bank of coils longitudinally thereof, the same serving additionally to refrigerate the air. in said chamber and to stimulate the gravitating circulation of air induced by said first means.

7 In combination, a structure providing a chamber, means within said chamber for refrigerating the air therein consisting-of a bank of overheadcoils clear of the ceiling and extending centrally,'longitudinally of the chamber, said refrigerating means being adapted to set up a gravitatin circulation of air wvithin the chamber consisting in the flow of air downwardly from the ceiling through the bank ofcoils, thence toward the side. walls, thence toward the ceiling and thence back along the ceiling to point of beginning above said bank of coils, means for introducing fresh air into the chamber and blowing it into the bankv of coils longitudi-' nally thereof, the same serving toventilate the chamber and stimulate the gravitating circulation of air induced by said refrigerating means.

8. In combination, astructure providing a chamber,.means within said chamber for refrigerating the air therein consisting of a. bank of overhead coils, clear of the ceiling, arranged centrally, longitudinally of the chamber, the bank having vertical passageways for air between the coils thereof extending lengthwise of the bank and communicating with the upper portion of the chamber thereabove and with the lower portion of the chamber therebeneath, and means for blowing air into the bank of coils lengthwise thereof. 3

In testimony whereof I have aflixed my signature to this specification.

- CHARLES A. MOORE. 

